Simple operation: the LED light bar dimmer switch is controlled by a knob. Turn the knob to adjust brightness or turn the light on/off. Turning the knob to the right gradually increases brightness, while turning it to the left gradually dims the light. No flicker or current fluctuation: utilizes PWM digital dimming technology for 0%-100% dimming. Provides stable performance with no flicker at low brightness and smooth, linear brightness adjustment. Operating temperature: -20°C to 60°C. Compact and easy to install: small unit measuring 65 x 33 x 32 mm allows for discreet placement. Includes mounting clips for straightforward installation. Compatible with various LED strips: suitable for single-color 3528, 5050, 5630, 5730, and 3014 LED light bars. Specifications: operates on DC 12V-24V. Two versions available – one supports up to 72W-144W with a maximum single-channel current of 6A; the other supports 24W-48W with a maximum single-channel current of 2A. Maximum control distance: 10 meters. Stay within specified limits for safe operation. Output current: less than 6A or 2A depending on model Color: black or white Material: metal and plastic Package includes: 1 x LED strip dimmer Note: Other items not included. Color may vary slightly due to lighting and display differences. Measurement tolerance: +/- 1-3 cm.